Paper-molding machine



A. H. BOLES.

PAPER MOLDING MACHINE.

APPLICATION FILED MAY 12. 1919.

Patented Feb. 1, 1921.

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A. R. BOLES.

PAPER MOLDING MACHINE- APPLICATION FILED MAY 12, 1919.

Patented Feb. 1,1921.

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INVENTOR 14. X. 50265,

ATTORNEY.

A. R. BOLES.

PAPER MOLDING MACHINE.

Patented Feb. 1,1921.

.4 TTORNE) L A. R. BOLES. PAPER MOLDING MACHINE.

Patented Feb. 1, 1921.

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L and UNITED STATES PATENT oFFIcE.

ALONZO R. ROLES, OF HOLLYWOOD, CALIFORNIA.

ZPAPER-MOLDING MACHINE.

Specification of Letters Patent.

Application filed May 12, 1919. Serial No. 296,715. 1

To all whom it may concern:

Be it known that I, ALoNzo R. BOLES, a citizen of the United States,residing at H011 wood, in the county of Los Angeles tate of California,have invented new and useful Improvements in Paper-Molding Machines, ofwhich the following is a specification.

My object is to make a machine for m0ld-' ing paper to be used in themanufacture of plaster board, and my invention consists of the novelfeatures herein shown, described and claimed.

Figures 1 and 1 together form a top plan view of a paper molding machineembodying the principles of my invention and showing the paper in themachlne, partsbeing broken away and shown in section, the view beingtaken looking in the direction 1ndicated by the arrows 1 in Fig. 2 and 1in Fi 24.

Fi s. 2 and 2 together form a side elevation %ooking in the directionindicated by the arrows 2 in Fig. land 2 in F g. 1,

parts being broken away and shown in sec? tion.

Fi 3 is an enlargedfragmentary sectiona detail on the line 3-3 of Figs.1 and 2.

Fig. 4 is an enlarged fragmentary sectional detail on the line 4-4 ofFigs. 1 and 2. v

Fig. 5 is an enlarged fragmentary vertical cross sectional detail on theline 5-5 of Fi 5. 1 and 2 ig. 6 is an enlarged fragmentary cross sectionthrough the paper and taken on the line 6-6 of Figs. 1 and 2.

Fig. 7 is an enlarged fragmentary sectionaldetail on the line 7-7 ofFig. 1 and at the farther side of the machine.

Fig. 8 is a fragmentary cross section of i the plaster board of whichthe molded paper brackets 3 and 4' extend forwardly from the upper endsof the posts 1 and 2, and the paper roll 5 has an arbor 6 rotatably 50'mounted in the forward ends of the brackets 3 and 4. Bearing brackets 6and 7 extend forwardly from the post 1, and similar hearing bracketsextend forwardly from the post 2. Flexible shafts 8 and 9 are mounted inthe bearing brackets 6 and 7, a plurality of sprocket wheels 10 aremounted upon the -14 are made up in the same way shaft 8, and aplurality of-similar sprocket wheels 11 are mounted upon the shaft 9. Aflexible shaft 12 is mounted across the center ofthe machine in linewith the shaft 8, and a second flexible shaft 13 is mounted in verticalalinement with the shaft 12 and in horizontal alinement with the shaft9. Sprockets 14 are mounted upon the shaft 12 in line with the sprockets10, and sprockets 15 are mounted upon the ,shaft 13 in line with thesprockets 11. A driving sprocket 16 is connected to the shaft 13.

Referrmg to Fig. 7, the shaft 13 intermedlate of its ends is mounted ina plurality of bearings 17 and the sprockets 15 have stub shaft sections18, said sections 18 being Ilg1d with the sprockets and;the sectionsfitting to ether like a tumbling rod, so that the sproc kets 15 areslightly inclined from parallel planes. The shaft 12 and sprockets asthe shaft 13 and sprockets 15. The flexible shafts 8 and 9 and thesprocket wheels 10 and 11 are constructed in the same manner as theshaft 13 and the sprockets 15 and shaft 12 and sprockets 14.

Sprocket chains 19 connect the sprockets 10 and 14, and similar chains20 connect the 22 are rectangular in plan and T-shaped in cross section,as shown in Figs. 3 and 4. At, or near the sprockets 10 and 11 thechains 19 and 20 are arranged alternately and spaced apart andstaggered, so that the pads 21 are in planes between the pads 22, andthe paper sheet 23 coming from the roll 5 passes between the pads 21 andthe pads 22 in a flat condition. The sprockets 14 and 15 are closertogether upon the shafts and the shafts 12 and 13 are closer togetherthan the sprockets 10 and 11 and the shafts 8 and 9, so that as thepaper 23 passes from between the sprockets 10 and 11 toward thesprockets Patented Feb. 1, 1921.

14 and 15 the pads 21 and 22 move toward each other both horizontallyand vertically so as to progressively crimp or corrugate the paper 23from its flat condition to the desired form.

In Fig. 3 the process of bending the paper has progressed slightly;while in Fig. 4

the paper is bent to a zigzag or channel 22, and the lips 27 and 28 ofthe pads 22 are in opposition to the faces 29 of the pads 21. so thatwhen the pads come together, as in Fig. 4, the pap eris firmly pressedto make right angled bends without any possibility of the padsintermeshing too far and tearing the paper.

Some distance behind the shafts 12 and 13 the forming plates 30 and 31are mounted. The plate 30 has dovetail slots 32 and dovetails 33 betweenthe slots. and the plate 31 has dovetail slots 32 and dovetails 35between the slots. The plates are put together endwise of the slots, sothat the dovetails 33 fit in the slots 34, and the dovetails 35 Ht theslots 32 with suiiicient space between the parts for the paper 29 topass. and the paper is drawn through the plates. thus changing the rightangle channel shape shown in Fig. 4 to the reversely dovetail shapeshown in Fig. 5. From the forming plates 30 and 31 the paper 29 is drawnover a roller 36 and under a roller 37, thereby pressing the paper fromthe shape shown in Fig. 5 to the shape shown in Fig. 6. From the roller37 the paper passes the plaster board machine and plaster is applied toproduce the plaster board shown in Fig. 8.

Especial attention is called to the fact that the shafts 8 and 9 arebowed forwardly when seen in plan, as in Fig. 1, to make the crown shapeA, as required to make the straight even pull on the entire width of thepaper with the lines of the plait converging to the concave lines B ofthe shafts 12 and 13. The crowning of the shafts 8 and 9 and theconcaving of the shafts 12 and 13 is produced by the joints in theshafts and is necessary to avoid tearing the paper. The roller 36 isconcaved upon the lines C and as the paper passes over this roller itassumes its narrowest form and passes under the straight roller D. andfrom the straight roller D the lines of the grooves and plaits in thepaper are parallel.

Thus I have produced a machine for molding paper tobe used in themanufacture of plaster board which will continuously and progressivelymold or fold the paper longitudinally as required to plait the paper andas required to produce plaster bfziird having dovetails projecting fromone s1 es Various changes may be made without departing from the spiritof my invention as claimed.

I claim:

1. In a paper molding machine, the combination of an upper series oftraveling converging sprocket chains, a similar lower series of chainsalternately spaced with reference to said first mentioned chains,alternately opposed channel forming pads on said chalns, means toactuate said chains to converge and cooperate with each other in theirdirection of travel, dove-tail forming means adjacent the cooperatingends of said chains. and flattening means adjacent said dove-tailforming means.

2. In a paper molding machine the combination of upper and lower sets ofconergrng chains inclined with reference to each other to alternatelyconverge and cooperate in their direction of travel, alternately opposedchannel forming pads on said chains arranged to press the paper 7 intosubstantially alternate channels and ribs. means to actuate said chains,means -tdiacent the cooperating ends of said chains to form thechanneled product into a shape substantially dove-tail in cross section,means adjacent said last mentioned means to substantially flatten thedove-tailed production.

3. In a paper molding machine, the combination of upper and lower setsof traveling converging chains spaced apart at their receiving ends andalternately arranged and inclined with reference to each other toconverge and cooperate at their delivery ends, alternately opposedchannel forming pads on said chains arranged to progressively cooperateand press the paper into substantially rectangular corrugations, meansto actuate said chains, means forward of the delivery ends of saidchains to form the corrugated product into a substantially dove-tailconfiguration a concave roller forward of said last mentioned means anda straight roller forward of said concave roller to substantiallyflatten the dove-tailed product.

l. In a paper molding machine, the combination of upper and lower setsof traveling converging chains spaced apart at their receiving ends andalternately arranged and 1 inclined with reference to each other toconverge and cooperate at their delivery ends, alternately opposedchannel forming means on said chains arranged to progressively cooperateto press the paper into substantially rectangular corrugations, saidmeans comprising rectangular blocks substantially T-shaped in crosssection and arranged to alternately approach each other in opposedrelation, means to actuate said chains, means forward of the deliveryends of said :hains to form the corrugated product into a substantiallydove-tail configuration, a concave roller forward of said last mentionedmeans and a straight roller forward of said concave roller to flattenthe dovetailed product.

.5. A machine for molding paper for the manufacture of plaster boardcomprising an upper series of sprocket chains, a lower series ofsprocket chains, forming pads upon the upper series of sprocket chains,second forming pads upon the lower series of sprocket chains. the firstand second pads moving in opposition to each other so as F upper seriesI channeled paper passes to produce opposite dovetails, and rollersaround which the paper passes to flatten the paper to form' plaits.

6. In a machine for molding paper for the manufacture of plaster board,an upper series of sprocket chains carrying forming pads, and a lowerseries of sprocket chains carrying forming pads in opposition to the thesprocket chains being mounted upon flexible shafts, the chains beingwider apart vertically and transversely at their receiving ends than attheir delivery ends so as to take a fiat sheet of paper andprogressively mold the paper into opposite channels. t I

7. In a machine for molding paper for the manufacture of plaster board,an upper series of sprocket chains carrying forming pads, and a lowerseries of sprocket chains carrying forming pads in opposition to theupper series, the sprocket chains being mounted upon flexible shafts,the shafts at the receiving ends of the chains being bowed outwardly toproduce a crown shape, and the shafts at the outer ends of the sprocketchains being correspondingly bowed to produce a concave shape, thechains being wider apart vertically and transversely at their receivingends thanat their delivery ends, and there being a concave roller beyondthe delivery ends of the chains and a straight roller beyond the concaveroller so as to take a flat sheet of paper and progressively mold thepaper into opposite channels. In testimony. whereof I have signed myname to this specification.

ALONZO R. BOLES.

